Sometimes,observers see this as a comet's tail, which can be visible to the unaided eye stretching across the night sky.

VOA: special.2011.02.09

The Andromeda Galaxy is big enough and near enough to be seen by the unaided eye in the star group Andromeda on a dark night.

VOA: special.2009.01.20

However, they do not have the power to overhaul unaided a legal institution which, like much of Britain's constitutional machinery, has evolved over generations and now seems dangerously ramshackle.

ECONOMIST: The law: Judging the judges | The

It is that as a mathematician he discovered - alone and unaided - the binomial theory usually attributed to a famous English scholar called Isaac Newton.

BBC: Part Three - France and the World

When she could no longer walk unaided, instead of using a cane, she used a broom, so it might just look like she was sweeping.

FORBES: My Aunt, Olive June Black, An Ohio Original -- In Memoriam